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Theoretically 2-methylhexane also burns with a less sooty flame, emitting higher-frequency radiation; however, as heptane and 2-methylhexane differ by only one carbon atom, in terms of branching, both burn with a bright yellow flame when ignited. Compared to n-heptane, 2-methylhexane also has lower melting and boiling points. A lower density of ...
2-Methoxynaphthalene, also called β-naphthol methyl ether or yara yara, [2] is a stabilizer found in gunpowder, particularly smokeless gunpowders. It is soluble in alcohol , and insoluble in water and dipropylene glycol .
In organic chemistry, hexene is a hydrocarbon with the chemical formula C 6 H 12.The prefix "hex" is derived from the fact that there are 6 carbon atoms in the molecule, while the "-ene" suffix denotes that there is an alkene present—two carbon atoms are connected via a double bond.
Hagemann's ester, ethyl 2-methyl-4-oxo-2-cyclohexenecarboxylate, is an organic compound that was first prepared and described in 1893 by German chemist Carl Hagemann. The compound is used in organic chemistry as a reagent in the synthesis of many natural products including sterols , trisporic acids , and terpenoids .
In 2024, Shen and coworkers disclosed further studies on the biosynthesis of enediynes and reported evidence for a diiodinated trienetetrayne ((13Z)-2,13-diiodopentadeca-1,7,13-triene-3,5,9,11-tetrayne) derived from pentadeca-1,3,5,7,9,11,13-heptaene as a common biosynthetic intermediate for the three known families of enediyne natural products.
trans-3-Methyl-2-hexenoic acid (TMHA) is an unsaturated short-chain fatty acid that occurs in sweat secreted by the axillary apocrine glands of Caucasians and some Asians. [1] Hexanoic acids such as TMHA have a hircine odor. Of the fatty acids contributing to Caucasian men's underarm odor, TMHA has the most prominent odor. [2]
The Nobel laureate, Bengt I. Samuelsson, and colleagues first described 5(S)-HETE in 1976 as a metabolite of arachidonic acid made by rabbit neutrophils. [1] Biological activity was linked to it several years later when it was found to stimulate human neutrophil rises in cytosolic calcium, chemotaxis, and increases in their cell surface adhesiveness as indicated by their aggregation to each ...
The use of guanfacine for treating prefrontal disorders was developed by the Arnsten Lab at Yale University. [ 43 ] [ 18 ] Guanfacine is much more selective for α 2A -adrenergic receptors than clonidine , which binds to and activates not only the α 2A -adrenergic receptor but also α 2B - and α 2C -adrenergic receptors and the imidazoline ...